1. If there is a comparison between two nominative cases, the pronoun of the nominative case is used...

don't' (do not) को feel के साथ जोड़कर आप बता सकते है कि...

जब can't को help के साथ जोड़कर वाक्य बनाया जाता...

Your is a possessive pronoun which refers to belonging to a person or people that the speaker is addressing...

Their is a personal pronoun which refers to belonging to or associated with a person or people whereas...